Chapter 02 - Motion Chapter 02 Motion True / False Questions Galileo reasoned that the distance a freely falling object travels is proportional to the square of the time TRUE Bloom's Level: Analyze Section: 2.05 Topic: Kinematics If a 16 lb bowling ball and a 10 lb bowling ball are dropped from the 5th floor at the same time the heavier ball will reach the ground first FALSE Bloom's Level: Analyze Section: 2.05 Topic: Gravity When you roll a ball across the floor, it comes to a stop because you are no longer exerting a force on it FALSE Bloom's Level: Analyze Section: 2.04 Topic: Kinematics 2-1 © 2013 by McGraw-Hill Education This is proprietary material solely for authorized instructor use Not authorized for sale or distribution in any manner This document may not be copied, scanned, duplicated, forwarded, distributed, or posted on a website, in whole or part Chapter 02 - Motion An object accelerates when its speed or direction changes TRUE Bloom's Level: Understand Section: 2.02 Topic: Kinematics A car traveling at 20 mph on a curved exit ramp has a constant velocity FALSE Bloom's Level: Apply Section: 2.02 Topic: Kinematics Newton's 2nd law states that if a net force acts on an object, it will move at constant velocity FALSE Bloom's Level: Apply Section: 2.06 Topic: Newton's laws For a constant mass the acceleration of an object is directly proportional to the applied force TRUE Bloom's Level: Apply Section: 2.07 Topic: Newton's laws The football team wins a tug of war with the chess team because it pulls harder on the rope than the chess team does FALSE Bloom's Level: Apply Section: 2.06 Topic: Newton's laws 2-2 © 2013 by McGraw-Hill Education This is proprietary material solely for authorized instructor use Not authorized for sale or distribution in any manner This document may not be copied, scanned, duplicated, forwarded, distributed, or posted on a website, in whole or part Chapter 02 - Motion The momentum of an object remains the same unless an unbalanced force acts on it TRUE Bloom's Level: Apply Section: 2.08 Topic: Momentum 10 A child on a carousel moving at constant speed has an acceleration of zero FALSE Bloom's Level: Apply Section: 2.02 Topic: Newton's laws Multiple Choice Questions 11 The speed calculated from the distance traveled during an entire trip and the elapsed time is a(an) A average speed B instantaneous speed C final speed D constant speed Bloom's Level: Understand Section: 2.02 Topic: Kinematics 12 Ignoring air resistance, the velocity of a falling object A is constant B is constantly increasing C increases for a while, then becomes constant D depends on the mass of the object Bloom's Level: Apply Section: 2.05 Topic: Gravity and motion 2-3 © 2013 by McGraw-Hill Education This is proprietary material solely for authorized instructor use Not authorized for sale or distribution in any manner This document may not be copied, scanned, duplicated, forwarded, distributed, or posted on a website, in whole or part Chapter 02 - Motion 13 The difference in speed and velocity is that a measure of velocity must include A a destination B distance and time units C direction D time of departure Bloom's Level: Understand Section: 2.02 Topic: Kinematics 14 The tendency of a moving object to remain in unchanging motion in the absence of an unbalanced force is called A inertia B free fall C acceleration D impulse Bloom's Level: Understand Section: 2.03 Topic: Newton's laws 15 Galileo discovered that an object in free fall (ignoring air resistance) A falls at constant velocity B has a velocity proportional to its weight C falls with increasing acceleration D None of the above Bloom's Level: Understand Section: 2.05 Topic: Kinematics 2-4 © 2013 by McGraw-Hill Education This is proprietary material solely for authorized instructor use Not authorized for sale or distribution in any manner This document may not be copied, scanned, duplicated, forwarded, distributed, or posted on a website, in whole or part Chapter 02 - Motion 16 A cannonball is fired straight up at 50 m/s Neglecting air resistance, when it returns to its starting point, its speed is A 50 m/s B more than 50 m/s C less than 50 m/s D It depends on how long it is in the air Bloom's Level: Analyze Section: 2.05 Topic: Kinematics 17 A heavy object and a light object are dropped from rest at the same time in a vacuum The heavier object will reach the ground A before the lighter object B at the same time as the lighter object C after the lighter object D It depends on the shape of the object Bloom's Level: Analyze Section: 2.05 Topic: Gravity and motion 18 The newton is a unit of A motion B energy C power D force Bloom's Level: Analyze Section: 2.07 Topic: Newton's laws 2-5 © 2013 by McGraw-Hill Education This is proprietary material solely for authorized instructor use Not authorized for sale or distribution in any manner This document may not be copied, scanned, duplicated, forwarded, distributed, or posted on a website, in whole or part Chapter 02 - Motion 19 The pound is an English unit of measure; its SI counterpart is the A newton B kilogram C joule D momentum Bloom's Level: Apply Section: 2.07 Topic: Newton's laws 20 If a net force applied to an object doubles, then its A velocity doubles B acceleration doubles C acceleration is cut in half D acceleration increases by a factor of four Bloom's Level: Analyze Section: 2.07 Topic: Kinematics 21 A block of iron is transported to the moon Which of the following is true? A Both the mass and weight remain unchanged B The mass decreases, but the weight remains the same C The mass remains the same, but the weight decreases D Both the mass and weight decrease Bloom's Level: Analyze Section: 2.07 Topic: Kinematics 2-6 © 2013 by McGraw-Hill Education This is proprietary material solely for authorized instructor use Not authorized for sale or distribution in any manner This document may not be copied, scanned, duplicated, forwarded, distributed, or posted on a website, in whole or part Chapter 02 - Motion 22 A cannon ball and a bowling ball were dropped at the same time from the top of a building At the instant before the balls hit the sidewalk, the cannon ball has greater A velocity B acceleration C momentum D All of these are the same for the two balls Bloom's Level: Analyze Section: 2.08 Topic: Kinematics 23 An object moves at a constant 5.0 m/s One could correctly conclude that A no forces are acting on the object B a constant force is applied to the object C it was on a frictionless surface D none of the above Bloom's Level: Analyze Section: 2.04 Topic: Kinematics 24 The product of the mass (m) and velocity (v) of an object is known as the A momentum B inertia C centripetal force D acceleration Bloom's Level: Understand Section: 2.08 Topic: Momentum 2-7 © 2013 by McGraw-Hill Education This is proprietary material solely for authorized instructor use Not authorized for sale or distribution in any manner This document may not be copied, scanned, duplicated, forwarded, distributed, or posted on a website, in whole or part Chapter 02 - Motion 25 From the equation w = mg, it is apparent that weight is equivalent to a(an) A force B mass C acceleration D None of these Bloom's Level: Analyze Section: 2.06 Topic: Newton's laws 26 Which of the following is not a unit of speed? A km/h B ft/s C m/s D g/L Bloom's Level: Analyze Section: 2.02 Topic: Kinematics 27 Which if the following is not a unit of acceleration A km/h2 B m/s C km/h/s D m/s/s Bloom's Level: Analyze Section: 2.02 Topic: Kinematics 28 An object is moving in a straight line at unchanging speed This means that A all forces on the object are balanced B there is an unbalanced force in the direction of motion C the force of movement is greater than the friction force D the force of movement is greater than the weight of the object Bloom's Level: Analyze Section: 2.02 Topic: Newton's laws 2-8 © 2013 by McGraw-Hill Education This is proprietary material solely for authorized instructor use Not authorized for sale or distribution in any manner This document may not be copied, scanned, duplicated, forwarded, distributed, or posted on a website, in whole or part Chapter 02 - Motion 29 Ignoring air resistance, a falling object will have a speed of 9.8 m/s at the end of s and will fall a distance of A 2.5 m B 4.9 m C 9.8 m D 20 m Bloom's Level: Analyze Section: 2.02 Topic: Gravity and motion 30 Ignoring air resistance, a cannonball shot straight out from a mountain top with a speed of km/s will A fall to Earth as a projectile B stay the same distance above the surface C gain altitude as it moves D strike Earth in 9.8 seconds Bloom's Level: Analyze Section: 2.10 Topic: Gravity and motion 31 An artificial satellite requires no engine because the satellite falls toward Earth as the surface A curves away from it continuously B falls at the same rate as the satellite C is attracted by the Moon D pulls harder on the satellite Bloom's Level: Analyze Section: 2.10 Topic: Gravity and motion 2-9 © 2013 by McGraw-Hill Education This is proprietary material solely for authorized instructor use Not authorized for sale or distribution in any manner This document may not be copied, scanned, duplicated, forwarded, distributed, or posted on a website, in whole or part Chapter 02 - Motion 32 A straight-line distance covered during a certain amount of time describes an object's A speed B velocity C acceleration D Any of the above Bloom's Level: Understand Section: 2.02 Topic: Kinematics 33 How fast an object is moving in a particular direction is described by A speed B velocity C acceleration D Any of the above Bloom's Level: Understand Section: 2.02 Topic: Kinematics 34 Acceleration occurs when an object undergoes A a speed increase B a speed decrease C a change in the direction of travel D Any of the above Bloom's Level: Understand Section: 2.02 Topic: Kinematics 2-10 © 2013 by McGraw-Hill Education This is proprietary material solely for authorized instructor use Not authorized for sale or distribution in any manner This document may not be copied, scanned, duplicated, forwarded, distributed, or posted on a website, in whole or part Chapter 02 - Motion 35 A car moving at 60 mi/h comes to a stop in 10 s when the driver slams on the brakes In this situation, what does 60 mi/h represent? A average speed B final speed C initial speed D constant speed Bloom's Level: Analyze Section: 2.02 Topic: Kinematics 36 Is any change in the motion of an object an acceleration? A Yes B No C It depends on the type of change Bloom's Level: Analyze Section: 2.02 Topic: Kinematics 37 A measure of how fast your speed is changing is a measure of A velocity B average speed C acceleration D difference between initial and final speed Bloom's Level: Analyze Section: 2.02 Topic: Kinematics 38 Neglecting air resistance, a ball in freefall near Earth's surface will have A constant speed and constant acceleration B increasing speed and increasing acceleration C increasing speed and decreasing acceleration D increasing speed and constant acceleration Bloom's Level: Analyze Section: 2.02 Topic: Gravity and motion 2-11 © 2013 by McGraw-Hill Education This is proprietary material solely for authorized instructor use Not authorized for sale or distribution in any manner This document may not be copied, scanned, duplicated, forwarded, distributed, or posted on a website, in whole or part Chapter 02 - Motion 39 From a bridge a ball is thrown straight up at the same time a ball is thrown straight down with the same initial speed Neglecting air resistance, which ball would have a greater speed when it hits the ground? A The one thrown straight up B The one thrown straight down C Both balls would have the same speed Bloom's Level: Analyze Section: 2.06 Topic: Gravity and motion 40 After being released, a ball thrown straight down from a bridge would have an acceleration of A 9.8 m/s2 B zero C less than 9.8 m/s2 D more than 9.8 m/s2 Bloom's Level: Analyze Section: 2.06 Topic: Gravity and motion 2-12 © 2013 by McGraw-Hill Education This is proprietary material solely for authorized instructor use Not authorized for sale or distribution in any manner This document may not be copied, scanned, duplicated, forwarded, distributed, or posted on a website, in whole or part